1200-1201 / 3107
What does the ICRU recommend
•
International Commission on Radiation Units and
Measurements (ICRU) develop guide-lines for
prescribing, recording, and reporting absorbed dose for
radiation therapy
•
ICRU 50, 1993 defined GTV/CTV/PTV
•
ICRU 62; 1999 added PRV, IM and setup margin
•
Dose prescribed to
•
100% (ICRU ref point)
•
Range 95-107%
•
These documents recommended concepts and
procedures for
•
tumour and normal tissue delineation
•
margins to take into account potential tumour invasion, organ
motion, and setup error.